Magnetic ore-separator.



G. LAND.

MAGNETIC ORE SBPARATOR.

APPLIOATION HLBD MAY 24, 1913.

narran sfraajns PATENT QFFCE.

0F KING COUNTY,

.WASHINGTON.

MAGNETIC ORE-SEPARATOR.

Specification of Letters Patent.

Application led May 24, 1913.

To 1U whom it may concern.:

Be it known that I, Gonnox Lxxn, a citizen of the United States, and a resident of Seattle, county of King, and State of Washington, have invented certain new and useful Improvements in Magnetic Ore-Separators, of which the following is a full, true, and exact specification.

This invention relates to magnetic ore separators and has for its principal object to provide a. device of this character by means of which a perfect separation of the magnetic ore from its carrying medium, either wet or dry, is accomplished, preference, however, being had for the use ot' water as a carrying medium for the ore.

An important feature .of the invention is its simplicity and resultant low cost of maintenance.

Other features will appear as the invention is more fully hereinafter described and illustrated in the accompanying drawings, in which- Figure 1, is a central longitudinal sectional View of the device, with parts broken away. Fig. 2, is an end elevationpartly broken away of the same looking from left to right in Fig. 1.

Referring now more particularly to the drawings, reference' numeral 1 designates sills parallel to each other and from each of which extend the risers 2, whose upper ends are connected together by means of the timbers 3, the said sills, risers and timbers being mortised or otherwise firmly secured together, constituting a solid frame work, which may be further braced by means of the timbers 4f. Extending in a slantwise. direction fromv one end of the said frame work, is the trough 5, in whose bottom the opening indicated at (3. Communicating with the said opening and extending transversely of the said frame work is the. fresh water trough 7. which is supported upon the cross timbers S and S, whose ends rest upon the sills 1. and through one side of which trough is led the fresh water pipe D. The trough 7 is of equal width with the trough 5, and to its rear side is joined the trough 10, which extends downwardly, as shown, so that the overflow from the rear of the trough T is taken away through the trough 10. as is the downtlow from the trough 11. The trough 11 is supported upon the upper ends of the spring bars 12, the lower ends of the Patented Sept. 1, 191.4.

semi No. 769,696.

latter being secured at 13, and 13a to the cross timbers 11 and 14a, respectively. The l trough l1, is held to the said spring bars, as the latter oscillate, by means of the cleats l15, as will be understood. These spring bars 1Q, are preferably of wood and it will 'be appreciated that the same are effective breakage, new bars may be supplied, much -more readily than if metallic spring niembers were used. At the rear of the-trough 11, is the partition 1G, which extends across vfreni one side of the trough to the other, but does not, however, extend entirely to the bottom of the said trough. Slanting :rcarwarrlly1 from the top of the said pai-tr L'tion is the baille board 1T. Secured to the partition 1G, and the rear wall 1S, of the Atrough 11, is the strainer 19, which extends entirely across from one side of the trough 11 to the other, but does not extend entirely to the bottoni of said 'ltrougln lSecured to the bottom of the :trough 1l, is the false bottom 20, which lis in the form of an inverted shallow trough, which extends entirely across from one side to the other of the trough 11, and in which are the perforations 21. Both ends of the false bottom 20, are open, as shown, so that the water is free to flow along thereunder and upon the bottom of the trough 11. Extending frcm one of the timbers 4, to the other, and revolubly passing through the same is the shaft 22, extending radially f rom which are the ams 23, which, when the sha ft is rotated by means of the wheel 2l, and its driving belt 25, causes the said cams to alternately Contact with the bracket 2(3. whieh vibrates the spring bars 12, and causes the trough 11, to be reeiprocated.v

Mounted upon the timbers .l, are the 'journal bearings 27, within which is revolubly mounted the shaft QS, secured to one end of which is the wheel 2), around which passes the belt 30, which extends rem'wardly and around thc whe-irl 31, secured to theshatt 22. Secured to the shaft i8 is the metallic magnetized drum E12, around which. and the similar drum 33, (which is not magnetized), passes the belt 233, the shaftt of the drum 13. is revolubly mounted in the bearings 11-, secured to the sides of the trough lt will be noted that the bearings. ft are in the torm ot straddlers. (sce F 1g. 1l, which allow the drum 33, to be readily/lifted from for the purpose intended, and, in case ofv thc trough 5, for repairs to the parts and ior cleansing thereof, and that the space between the straddlers which constitute the bearings 34, is such that the shaft 34 can move to the left, as viewed in Fig. 1., as the belt 33, stretches.

The operation of the device is as follows: The ore is directed into the extreme right hand end of the trough 11, (see Fig. 1), the balile 17, preventing overliow of the ore into the said trough and compelling the ore to pass through the strainer 19, before it enters the said trough'. The perforations in the strainer 19, are larger than those in the false bottom 20, so that the bulky and otherwise undesirable portions which pass with the ore into the strainer 19, are restrained by the said strainer. The ore after passing through the strainer 19, into the trough 11, passes by gravity along the bottom of the said trough and beneath the false bottom 20, until it reaches the field of attraction of the l magnetic drum 32, which revolves in anti- 'cloclwise direction,

as viewed in Fig. 1. The particles of the flow which are suscep tible to magnetic attraction. are drawn upwardly through the perorations in the false bottom 20, and held against that portion of the belt 33a, which surrounds the drum 32, and the remaining portion of the flow within the trough v11, continues to pass along the bottom of the said trough whence it falls into the trough 10, and is carried away thereby. As the drum 32, continues to revolve the magnetic attraction, of course, holds the attracted particles to the belt 33, until the said particles pass beyond the field of the magnetic attraction,l from which time on the particles are supported by the said belt until the particles pass below the horizontal plane of the longitudinal center of the drum 33, at which time most of the attractedv I particles fall 4away from the belt and into the trough 5, along which they are carried by the fresh water which overflows from the trough 6, into the trough 5. As the belt 33a, returns around the drum 33, to the drum 32, any of the attracted particles which, by that time, have not fallen away from the belt b gravity, are washed from the belt by the fresh water flowing along the bottom of the trough 5.

The embodiment of my invention which is shown in the accompanying drawings, and described hereinabove, is the best which 0ccurs to me at this time, but I am aware that in the practice of the invention, many changes will readily occur to others without departing from the spirit and scope of the invention, and I do not therefore xdesire to i bracket upon the which cooperate therewith to cause the said `be limited to the exact embodiment shown and described, except as limited in the appended claims.

What I claim as new tect by Letters Patent is:

1. The combination in a magnetic ore separator of a main frame and a magnetic drum revoluble thereupon, a second drum, an endless belt embracing both of the said drums, and an oscillatory downwardly inclined trough for the ore, a perforated false bottom in the said trough which is in spaced relation to the true bottom, and means for feeding an ore carrying medium between the said bottoms whereby particles of the ore are drawn upwardly through the perforations in the said false bottom and against the said belt.

2. In a magnetic ore separator, the combination with its main frame, magnetic drum and means for rotating the same, of vertical spring bars whose lower ends are fixed to the said frame, a downwardly inclined ore inlet trough which is supported upon the free ends of the said spring bars, a said trough and cams and desire to protrough to vibrate as the said drum is rotated, a partition transversely of the said trough whose lower edge is spaced above the bottom of the'trough, a strainer between` the said partition and one end of the trough, a false bottom for the trough, having perforations therein, and which extends into vthe eld of the said magnetic drum, the first mentioned trough being adapted to pass material to be separated beneath the said false bottom. 8. In a magnetic separator, a material receivingl table, a magnetic cylinder mounted to rotate adjacent to said table; means for supplying material and water to said table, means for conveying away the discharge from said table, and a screen extending between said table and said cylinder, said screen being spaced from the table. .4. In a magnetic separator, a material receiving table, a magnetic cylinder mounted to rota-te adjacent said table, means for supplying material and water to said table, means for conveying away the vdischarge Jfrom said table, a flume mounted over said discharge means, a roller journaled on-said flume and a belt der and said roller to convey the magnetic material from said 'cylinder to said fiume.

' GORDON LAND.

" Vitnesses:

FRED P. GroRIN,y

It. D. SMALLEY.

passing around said cylin 

